I am about to replace the roofing felt to my garden shed for the second time in six years, this material seems to deteriorate very quickly. Are there any more modern materials available, possibly high polymer plastic or could I use Flashband. Any help appreciated
Nothing wrong with roofing felt applied properly, but make sure you get one with a mineralised surface, and a polyester fabric base. Cheaper felt tends to have a jute cloth base, which can rot quite quickly. It will last a lot longer if you use felt adhesive on the joints as well as nails.
A butyl sheet will beat roofing felt ... and it will be a whole lot quicker to fit. No need to glue it down. But as a belt and braces approach, I evo-stick the edges where it overhangs. You could just fix it at the edges with say a plastic trim, and screw straight through into your edge battens.
You will get it from a fish pond liner supplier...they usually have small pieces that would cover a shed.
Look for the one that is vulcanised and around 1mm thick .... It's neat and tidy and lasts forever.... it will definitely outlast your shed.
About 25 years ago I covered my whole house roof in it ( we have a flat roof ) .... never had a problem since ..!